I also own dozens of Beyers including the T1, T90, T70, DT-everything. I've also used all the newest generation Beyers with mixed impressions. At the top of my list for the latest gen headphones are these Amirons. They do everything the first generation Tesla driver headphones do well (fast, detailed, great sound stage, airy) but better. To contrast at the bottom of the list for me are the T5P V2 and in ear Xelentos.

It should be noted that these are the least Beyer-esque headphones in their line. I've owned an unhealthy amount of Beyers over the years, and the Amiron is not relatable to anything Beyer has put out before. (Not out of the dozen or so I've listened to anyways.) The T90's which these were supposed to succeed have very little semblance in sound to the Amiron.
That's not to say these aren't good, as people already noted, these are warm-sounding, detailed and fast for a dynamic driver and they are superbly comfortable with that great Beyer build quality.
However imo, the Amiron was designed to appeal to a larger audience and those who despise the bright tuning Beyer is known for. If you love the Beyer-sound, and are looking for an upgrade to the old DT line, the DT1770 and DT1990 which uses the same drivers and are priced identically might the better options for you.

If you have been considering one of the Tesla gen 2 headphones from Beyerdynamic, this is a STEAL. I don't personally have the Amiron Home but I own the DT 1990 which uses the same driver, and it is truly PHENOMENAL. I say go for it.

One of the few headphones I actually want to rebuy after selling.
HE60 and for some reason HD590 are the other 2.
Most comfy headphones ever; sold them cause I needed a more closed back at the time: the T5p gen2.

I won't be joining the drop... but only because I already own these headphones. I just wanted to say that IMHO they hold their own with anything I have heard at ~$1K, won't yield to the likes of the HD800 or Elear without a fight, and are quite possibly the most comfortable over-ear (Massdrop's copywriters have it wrong, they are not 'on-ear') headphones I have ever had on, Not onlty a great headphone, a great value. Punches way above it's weight.

Anything that is remotely better is substantially more expensive, and nothing I have had on my head (at any price) has surpassed the comfort. One of the best values out there so wanted to encourage people who were considering them to join the drop.

Agree that they just dominate any headphone under 1000 dollars. I've listened to better cans and don't care, the Amirons just engage perfectly, all round perfectly, they're NOT perfect but the closest headphone to that I love them dearly.
That said they are comfy ;-) and not as heavy at 320 grams only, as some other contenders begin to get in the bigger price range

Although the wireless version is already out there, I believe these are still some of the headphones I've ever used. I haven't used plenty, but these are FUN cans to use, especially with a good DAC/amp combo. I would say the midbass is a bit recessed, but low end still kicks, with a sweet midrange and detailed highs, without the harsh treble some Beyer's are known for. I wish a shorter cable was included, and the included case is decent, but overall, it's a wonderful headphone for many music styles and for extended listening periods.

Check out Schiit Audio's offerings. You can get a Magni 3 Amp and Modi DAC for under $200. Add the Loki EQ to modify the sound to your liking, if you wish. I currently run the Valhalla 2 with NOS National/Panasonic 6922 triodes and a Bifrost DAC with the dual AKM 4490 chips, and it still rocks after owning it for 2 years.

To add some context to this, I already own one and love it. Sold my DT1990 Pro since it had what I felt was the classic Beyer ice pick treble, and the fact that you can't run it balanced without modding out the single-sided 3 pin mini-Xlr jack for a 4-pin.
Both these things are addressed with the Amiron. Treble still has energy but it's toned down a lot and the mids and bass are very cohesively balanced. I'd call it a very gentle U-curve.
I also have the T1. 2 Black version. It trumps the Amiron in detail retrieval but still sounds different enough to warrant keeping both.
Jump on this if you want a comfy Beyer that doesn't make your ears bleed.

I sadly had to return my T60's due to driver rattle that I could not fix. OPened them up, tightened all the screws, etc. and it was still there no matter the volume. Pretty bummed as I otherwise enjoyed their sound and looks. After doing more research, this is sadly more common than you would think but not as bad as the T50's and their variants (which from what I gather, can be pretty damn bad from a QC perspective). The only way to fix it is a replacement driver and I honestly don't even want to go through with that hassle via Fostex directly.

Head-Fi has a nice thread going comparing the newest beyerdynamic Tesla's:
Beyerdynamic DT 1990 Pro vs Beyerdynamic Amiron Home
Like others I chose the DT 1990 and have not heard the Amiron. The 1990 comes with 2 sets of pads giving the more fun balanced 990 sound or analytical sound closer to the 880 or T1 signature; the downside is the 1990 cannot be used with balanced cables and of course the Amiron can, so it likely a great choice for half the price of a T1 gen 2.

With all due respect, this electrical engineer begs to differ. :)
In your own words, "up in the signal chain", which translates to "DAC" these days, use of differential signals does make sense. With modern DAC's, availability of differential signals on the output is practically the norm. The driving force behind that trend is noise rejection to a certain degree, but even more the importance of the amp bridging for the mobile applications. Where their power efficiency rules. My inexpensive Sabaj DA3 is powered from USB, and "balanced" mode of operation makes a huge difference. The wet dream of every DAC manufacturer is to add their device to the BOM of a cellphone. IMHO, the modern source for the headphone amp, now and in the future, is differential.
When it comes to the construction of the amp, differential to single-ended signal conversion is not an issue, and has been solved long time ago. Except an interesting motive pops up in the construction of "M cubed" (M3), headphone amp by AMB, well respected DIY project. That amp has 3 output channels, the common ground is actively driven. And the amp, apparently, works well.
For a long time, the amp bridging was frowned upon because of the inherent distortion. Two channels controlling the differential output are never the same, whatever component matching we do. Hence the distortion. What was neglected for a long time is the fact that with amp bridging, the effective requirement for channel power output is halved. And every amp that I ever listened to showed better linearity and signal quality at lower amplifications. :)
With all due respect, I think that amp bridging, the "ballanced" amp architecture, is likely to be re-evaluated and perfected in the near future. As for the cans, there will be two trends. Either total elimination of the wire in mobile applications, or a drive to 4 wire cabling where the ground is soldered at the connector for 3 pin connectors/traditional amps.

Listening to them on the THX AAA 789, the bass is tighter on the 1990, the Amiron is boomier, kick drums are less defined. But the Amiron is much more comfortable, not sure if the 1990's are $100 better.
Edit: Symbols sound better, more texture...it makes the Amirons sound veiled like the HD6XX.

This has been my favorite headphone of 2 years. It's a perfect all-rounder, never fatigues.
Similar to the 880 but more detail and definitely more bass presence. I'm using the 880 right now as it's my other frequently used headphone along with this.... I love them both. Amiron is frigging great though minus it's 1 cable they give you, annoying and rubbery and long, it feels a bit cheap.

Hey there, does anyone know how the sound quality stacks up with the Hifiman HE560? I own a HE-560 and love the sound, but the build quality is a serious drawback (I wrap the headphone yokes in tape to help prevent them from breaking).
I use a Beyerdynamic DT880 for outside and commuting, and they're fantastic, so I'm considering this set for indoors. Thanks!

The HE560 good enough to keep as I have both. The Amiron sound better for most music to me. Better soundstage, more dynamic and less fatiguing. The bass is not as natural but still good. The clarity of the Amiron is so good it makes me question the benefits of planar technology and serves to show how good dynamic drivers can be when pushed to the limmits.

These headphones are phenomenal. Take the super detailed drivers of the DT1990 and put them into an ultra-comfortable enclosure.
The price is not phenomenal -- if you're patient you can find them for $400-450 throughout the year.

I picked up a pair as an Amazon Warehouse deal, damaged box, for $399 last week. The pads are super comfortable...if you don't wear glasses, and the comfort in general is amazing. The bass is fantastically tight, and the entire range is detailed, but the treble spike can be fatiguing with certain types of music. The sound stage is above average, with average imaging for a quality open back.
If you like the 6XX sound signature these aren't for you, they're more detailed, with punchier bass and better low end extension, but the highs aren't as smooth or flat, they're less forgiving of poorly recorded or mastered music, and they're much less intimate due to the larger sound stage.